I can say that LED technology is definately the future for automotive lighting and it is very likely that mainstream manufacturers will be bringing cars to the market with LED headlights (main and dipped beam) in the near future, as costs for LED modules lower to an acceptable price.
Light emmission for LED's is already up to the level of HID lighting and appart from durability and efficiency, the other significant feature for LED is that they can be dimmed easily. This could offer a degree of lighting control that we have not taken advantage of yet in automotive design. For example, headlights can become side lights at the flick of a switch, through dimming etc...
One thing we are very likely to see is the demise of the traditional 'headlight' as we see lighting 'styled' into the whole frontal area of the vehicle.....wavy lines of LED lights are here to stay (for a while at least).
